EP 3943621 A1 20220126 - BASE MATERIAL FOR CLAD STEEL, CLAD STEEL, AND METHOD FOR MANUFACTURING CLAD STEEL
Title (en)
BASE MATERIAL FOR CLAD STEEL, CLAD STEEL, AND METHOD FOR MANUFACTURING CLAD STEEL
Title (de)
BASISMATERIAL FÜR PLATTIERTEN STAHL, PLATTIERTER STAHL UND VERFAHREN ZUR HERSTELLUNG VON PLATTIERTEM STAHL
Title (fr)
MATÉRIAU DE BASE DESTINÉ À DE L'ACIER PLAQUÉ, ACIER PLAQUÉ ET PROCÉDÉ DE FABRICATION D'ACIER PLAQUÉ
Publication
Application
Priority
- JP 2019049681 A 20190318
- JP 2020011681 W 20200317
Abstract (en)
A base metal for clad steel contains: in terms of mass%, C: 0.04% to 0.10%, Si: 0.10% to 0.30%, Mn: 1.30% to 1.60%, P: 0.015% or less, S: 0.005% or less, Ni: 0.10% to 0.50%, Cr: 0.10% or less, Cu: 0.05% or less, Mo: 0.05% to 0.40%, V: 0.02% to 0.06%, Nb: 0.03% or less, Ti: 0.005% to 0.025%, Al: 0.020% to 0.050%, N: 0.0030% to 0.0100%, and the balance being Fe and unavoidable impurities. In the composition, a carbon equivalent Ceq according to the following formula (1) Ceq = C + Mn/6 + (Ni + Cu)/15 + (Cr + Mo + V)/5 (mass%) is 0.400 or less, and a yield ratio Y.R. according to the following formula (2) Y.R. = Y.S. (MPa; 0.5% Under load)/T.S. (MPa) is less than 0.80.
IPC 8 full level
C21D 9/00 (2006.01); C22C 38/00 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP)
C21D 1/18 (2013.01); C21D 8/0205 (2013.01); C21D 8/0221 (2013.01); C21D 8/0226 (2013.01); C21D 8/0263 (2013.01); C21D 9/46 (2013.01); C22C 38/04 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C22C 38/58 (2013.01); C21D 2251/02 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3943621 A1 20220126; EP 3943621 A4 20230712; JP 2020152932 A 20200924; JP 7281314 B2 20230525; WO 2020189672 A1 20200924
DOCDB simple family (application)
EP 20772572 A 20200317; JP 2019049681 A 20190318; JP 2020011681 W 20200317